CN102380839B

CN102380839B - Dustproof structure of ratchet spanner

Info

Publication number: CN102380839B
Application number: CN2010102749219A
Authority: CN
Inventors: 胡厚飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-09-06
Filing date: 2010-09-06
Publication date: 2013-11-20
Anticipated expiration: 2030-09-06
Also published as: CN102380839A

Abstract

The invention relates to a dustproof structure of a ratchet spanner. The ratchet spanner is provided with a head part, a rod body, a holding part and a drive member and is characterized in that: the drive member is provided with a step surface between a clamping end and an annular groove, wherein an annular edge is formed on the outer ring of the step surface in a transverse extruding way, the annular edge is step-shaped, and the larger circle diameter of the annular edge is larger than the maximum outer diameter of the drive member; the groove is internally provided with a second clamping groove; a dustproof cover is sleeved in the groove; and the dustproof cover closely covers an opening formed on a second end surface between the groove and the annular edge of the step surface, is buckled into the step-shaped annular edge and is positioned in the second clamping groove of the groove so as to wrap a C-shaped fastener in the groove space, and the purpose of preventing dust from entering a combination position between a pore chamber and the drive member from the groove is achieved.

Description

The dustproof construction of ratchet spanner

Technical field

The present invention is a kind of dustproof construction of ratchet spanner, and espespecially a kind of dust cap that is arranged in the head of ratchet spanner and groove that actuator one side is offered reaches and prevents that the dirt bits from entering the dustproof construction of the ratchet spanner between head and actuator from outward.

Background technology

please refer to Figure 1A, A-A ' the cutaway view of the ratchet wrench structure shown in 1B, existing ratchet spanner 10 has a head 12, one body of rod 11, one grip part 14 and an actuator 2, wherein this head 12 has the first end face F1 and the second end face F2, on this head 12, offer at least the pore chamber 121 of a perforation first end face F1 and the second end face F2, on the second end face F2 of pore chamber 121 1 sides, offer a groove 13, wherein this pore chamber 121 is for being arranged at wherein for this actuator 2, these pore chamber 121 upper ends are the smaller opening of a diameter and form a Restricted edge 122, this pore chamber 121 offers one first tank 124 and the second tank 125 in head 12 successively towards the inner circle of the body of rod 11 directions, wherein the second tank 125 is penetrated with a perforate on the first end face F1, this first tank 124 is opened in head 12 inner spaces of 125 of this pore chamber 121 and the second tanks, and 13 of the first tank 124 and grooves are formed with one and separate face 123, these pore chamber 121 inner round wall one appropriate positions offer an annular groove 126, this annular groove 126 is offered to the groove face conducting with this groove 13 for ring-type, and position height is identical, in the structure of existing ratchet spanner 10, this actuator 2 has a driving body 21, one moving bar 20, the ratchet piece 22 of at least one and a toggle 15, these driving body 21 Wei Yi fastening ends, lower end 211, driving body 21 upper ends are the circle of a larger diameter, on its outer shroud, offer a tooth section 213, the larger circle in this upper end and 211 junctions, fastening end, below form class's face 212, and offer one first draw-in groove 214 on the ring footpath of 213, this class's face 212 and tooth section, the position of this first draw-in groove 214 and aforesaid groove 13 groove faces and this annular groove 126 are relative position, these driving body 21 centers offer one and run through the perforation 2151 of integral body and the structure of sheathed groove 2152, provide this moving bar 20 to arrange wherein, wherein this driving body 21 is for being sheathed in this pore chamber 121, and it is spacing to make tooth section 213 apical margins be resisted against these Restricted edge 122 belows, the position of this tooth section 213 is relative with the first tank 124 that pore chamber 121 1 sides are offered, wherein in this first tank 124, be arranged with at least one ratchet piece 22, this ratchet piece 22 is also separated face 123 supports, this ratchet piece 22 has a ratchet part 221 and a clicking section 222, this ratchet part 221 can be done the meshing of special angle with aforesaid tooth section 213, so as to this driving body 21 of moving, carry out unidirectional torsion, this clicking section 222 is for having a radian, and on the second tank 125 from be arranged with a toggle 15, this toggle 15 is for being rotating in this second tank 125, it is provided with one group of handle 151 and a struck side 152, wherein this group handle 151 is for to be arranged at outside the first end face F1 of head 12, with hand, stirred by the operator, and this struck side 152 is for being resisted against on aforementioned clicking section 222, make it when being subjected to dial handle 151 switch, it can push against and the displacement of special angle is carried out in clicking section 222, drive this ratchet part 221 and carry out the meshing of ad-hoc location with tooth section 213, this first draw-in groove 214 and relative groove 13 groove faces and 126 sheathed C shape fasteners 24 of annular groove thereof, the end that this C shape fastener 24 is relative can be bent into the clamping part 241 of an overhead kick shape usually relatively, this C shape fastener 24 can be by the interior rotation of driving body 21 this pore chamber 121 of location, this fastening end 211 is to protrude in the second end face F2 opening part from pore chamber 121, the clamping part 241 of these C shape fastener 24 relative two overhead kick shapes is also inserted in these groove 13 spaces, make the operator can see through the opening of this groove 13 with this clamping part 241 of nipper plier clamping, so as to discharging this C shape fastener 24, break away from 126 of these first draw-in grooves 214 and relative groove 13 groove faces thereof and annular grooves, reach and make driving body 21 can break away from the interior taking-up of pore chamber 121 to keep in repair, and these moving bar 20 bottoms have the less moving end 201 in a bar footpath, again in the sheathed spring 202 of these moving end 201 outer shrouds, whole moving bar 20 is rear for being arranged in aforesaid perforation 2151 and sheathed groove 2152 in embedding this spring 202 with moving end 201, so as to discharging the inner sheathed spheroid 23 in fastening end 211, see through after this spheroid 23 can engage with work package (sleeve etc.) location and apply.

please refer to again schematic diagram shown in Figure 2, wherein existing ratchet spanner 10 designs in the groove 13 that the second end face F2 offers, though having, it provide the clamping part 241 of these C shape fastener 24 ends to be arranged at wherein, and can provide nipper plier to carry out clamping and discharge the design that this C shape fastener 24 breaks away from 126 of these first draw-in grooves 214 and relative groove 13 groove faces thereof and annular grooves, after yet exposed groove 13 but can make the long-term use of this ratchet spanner 10, but can start from these groove 13 positions and pile up the dirt bits, these dirt bits D can enter into this pore chamber 121 inner spaces as the path as shown in icon, can make especially 221 of the tooth section 213 of driving body 21 and this ratchet parts, after using, long high torsion can produce abnormal wearing and tearing, cause collapsing the serious consequence of tooth or slippage, therefore existing ratchet spanner 10 need to have special dustproof design in groove 13 positions, just can avoid the dirt bits to accelerate the shortcoming of damaging produces.

U.S. Patent number US5 for another example, 533, the 427(denomination of invention is: shown in patent of invention specification RATCHET WRENCH HAVING RATCHET TEETH OF HIGHER STRENGTH), this patent specification accompanying drawing 1(illustrates Fig1) disclose a stator 66(retaining plate66 is arranged) design, but take a broad view of the explanation in this explanation, this stator 66(retaining plate66) for being arranged at its ratchet piece 50(pawl50) bottom surface, this stator 66(retaining plate66) below wears a locating ring 44(clamping ring44 again) and this locating ring 44(clamping ring44) the ear 45(ear45 that protrudes of a side), this stator 66(retaining plate66) in design, the face that separates 123 of approximate above-mentioned existing ratchet spanner 10 has the design of supporting ratchet piece 22, right this kind stator 66(retaining plate66) design must be born ratchet piece 50(pawl50) pressure during spine move, therefore be necessary for take metal as material, can't be coated on again locating ring 44(clamping ring44) outside, therefore the dirt bits still can be piled up in locating ring 44(clamping ring44) outside, at driving body 40(ratchet wheel40) constantly in rotation process, dirt bits still can be from ear 45(ear45) gap between enter driving body 40(ratchet wheel40) and ratchet piece 50(pawl50) between, there is no enough dust-proof effects.

Summary of the invention

The purpose of this invention is to provide and a kind ofly can prevent that dirt bits from entering the dustproof construction of the ratchet spanner between head and actuator from outward.

in order to reach above-mentioned enforcement purpose, the present invention proposes a kind of dustproof construction of ratchet spanner, this ratchet spanner has a head, one body of rod, one grip part and an actuator, wherein this head has the first end face and the second end face, on this head, offering at least one connects the pore chamber of first end face and the second end face and offer a groove on the second end face of pore chamber one side, this pore chamber is for arranging for this actuator, on this pore chamber inner round wall, offer an annular groove, this actuator has a driving body at least, the ratchet piece of at least one and a toggle, on this driving body, has at least a tooth section, one fastening end and one first draw-in groove, and after in this actuator is installed in this pore chamber, this fastening end is to protrude in the second end face opening part from pore chamber, the part of this at least one ratchet piece is in meshing tooth in this driving body section, to use this driving body of moving to carry out unidirectional torsion, this first draw-in groove is opened on the ring footpath between fastening end and tooth section, and when driving body is inserted pore chamber with respect to the inboard of this annular groove position, and and this annular groove between be arranged with a C shape fastener and use the Locating driver body in this pore chamber, tail end tool one clamping part that this C shape fastener is relative is also inserted in this recess space, the principal character of the dustproof construction of this ratchet spanner is: this driving body has class's face between fastening end and annular groove, the outer shroud of this class's face laterally protrudes and is formed with the ring limit of a step-like and larger diameter greater than the driving body maximum outside diameter, in this groove, offer one second draw-in groove, in this groove, be arranged with a dust cap, this dust cap between the ring limit that closely is covered in this groove and class's face on the formed opening of the second end face, and buckle into location in the second draw-in groove of aforementioned step-like ring limit and this groove, to coat this C shape fastener in recess space and to prevent that the dirt bits from being entered in this pore chamber and actuator binding site by this groove.

this dust cap of the dustproof construction of this ratchet spanner has at least one slot to make way and is covered on the clamping part of this C shape fastener, the groove depth of the slot to make way of this dust cap is greater than the thickness of C shape fastener, this dust cap has one first round edge C1 and the second round edge C2, wherein the first round edge C1 is the arc limit that fits in this groove one side, the second round edge C2 fits in the outer shroud ring limit of this driving body, on the first round edge C1 of this dust cap, convex with a projection, this projection is spacing for embedding in this second draw-in groove space when this dust cap is sheathed on this groove, in the second round edge C2 of this dust cap is convexly equipped with for the class's face outer shroud that embeds this driving body when this dust cap is sheathed on this groove ring limit, locate.

The accompanying drawing explanation

Figure 1A is the structural representation of looking up of existing ratchet spanner;

Figure 1B is the cross-sectional side schematic diagram of existing ratchet spanner;

Fig. 2 is the assembling side cross-sectional schematic that amplify the part of existing ratchet wrench structure;

Fig. 3 A is the structural representation of looking up of the present invention;

Fig. 3 B is cross-sectional side schematic diagram of the present invention;

Fig. 4 be of the present invention local amplify analyse and observe the action schematic diagram;

Fig. 5 is perspective exploded view of the present invention;

Fig. 6 A is the perspective view of dust cap of the present invention;

Fig. 6 B is the other direction perspective view of dust cap of the present invention;

Fig. 7 is another perspective exploded view of the present invention;

Fig. 8 is a perspective exploded view more of the present invention;

Fig. 9 is the partial structurtes cross-sectional schematic of another embodiment of the present invention.

Description of reference numerals:

10 ratchet spanneres

11 bodies of rod

12 head 121 pore chambers

122 Restricted edge 123 separate face

124 first tank 125 second tanks

126 annular grooves

13 groove 131 second draw-in grooves

14 grip parts

15 151 groups of toggles handles

152 struck sides

2 actuators

20 moving bar 201 moving ends

202 springs

21 driving body 211 fastening ends

212 class's face 2121 ring limits

213 tooth section 214 first draw-in grooves

2151 perforation 2152 sheathed grooves

22 ratchet piece 221 ratchet parts

222 clicking sections

23 spheroids

24 C shape fastener 241 clamping parts

30 dust cap 301 projections

302 slots to make way

C1 first round edge C2 the second round edge

D dirt bits

F1 first end face F2 the second end face

The specific embodiment

For technical characterictic of the present invention, purpose and effect being had more clearly, understand, now contrast accompanying drawing explanation the specific embodiment of the present invention.

refer to Fig. 3 A, the structural representation of 3B and preferred embodiment of the present invention shown in Figure 4, A-A ' cutaway view and partial enlarged drawing, the dustproof construction of ratchet spanner of the present invention is mainly based on the derivative design of aforementioned existing ratchet spanner 10, therefore possess equally a head 12 is arranged, one body of rod 11, one grip part 14 and an actuator 2 and affiliated localized design thereof, the outer shroud that wherein the invention is characterized in this class's face 212 of this driving body 21 laterally protrudes and is formed with the ring limit 2121 of a step-like and larger diameter greater than driving body 21 maximum outside diameters, the position that this ring limit 2121 inner edges form in preferred embodiment of the present invention be covered in outside the second end face F2 and not with the cell body spatial intersecting of groove 13, and in this groove 13, offer the buckle space of one second draw-in groove 131, this second draw-in groove 131 is for seeing through milling cutter processing from these groove 13 inside in preferred embodiment of the present invention, in the extension milling, go out the space of darker radian.and in this groove 13, be arranged with a dust cap 30, this dust cap 30 is in the second draw-in groove that closely covers and buckle into aforementioned step-like ring limit and this groove, be positioned 2121, the ring limit of this groove 13 and this class's face 212, and on the formed opening of the second end face F2, so as to reaching, prevent that the dirt bits from being entered in this pore chamber 121 and actuator 21 binding sites by this groove 13, wherein this dust cap 30 has one first round edge C1 and the second round edge C2, wherein the first round edge C1 is the arc limit that fits in these groove 13 1 sides, the second round edge C2 fits in the outer shroud ring limit of this driving body 21.

please merge with reference to Fig. 5 again, Fig. 6 A, Fig. 6 B, each angle perspective view of Fig. 7 and preferred embodiment of the present invention shown in Figure 8, on this dust cap 30, offer the slot to make way 302 of at least one, this slot to make way 302 in sheathed enter this groove 13 interior after for to be covered on the clamping part 241 of this C shape fastener 24, and the groove depth of this slot to make way 302 is greater than the thickness of C shape fastener 24, while making this dust cap 30 sheathed, avoid producing interference mutually and can increasing again dust cap 30 thickness with clamping part 241, for described clamping part 241, also can be the clamp structure design of other Type C shape fastener, wherein on the first round edge C1 of this dust cap 30, convex with a projection 301, this projection 301 is spacing for embedding in these the second draw-in groove 131 spaces when this dust cap 30 is sheathed on this groove 13, the second round edge C2 of this dust cap 30 is convexly equipped with for embedding these class's face 212 outer shrouds when this dust cap 30 is sheathed on this groove 13 interior location, ring limit 2121, after the group of this dust cap 30 is made as and first embeds projection 301 in these the second draw-in groove 131 spaces in this preferred embodiment, at the second round edge C2 by this dust cap 30, press and be forced into interior fastening location, ring limit 2121 subsequently, the dirt bits that the dust cap 30 that enters through fastening can be denial on the outer opening of groove 13 enter, therefore can protect simultaneously this C shape fastener 24 and inner other structure, because this dust cap 30 can be by plastic ejection moulding, manufacture process fast and easy and with low cost, while therefore keeping in repair, only need this dust cap 30 is dug out outside this groove 13, the dust cap 30 of plastic injection can have better elasticity again, be fastened between this groove 13 and driving body 21 ring limits to have more after on the formed opening of the second end face F2 and paste effect, the effect that dustproof bits are entered is better.

refer to again the structure assembling view of another embodiment of the present invention shown in Figure 9, aforementioned relevant structural design features of the present invention also can be applicable on another embodiment, the pore chamber 121 of this head 12 does not run through the first end face F1 in this embodiment, and in this driving body 21, also do not have moving bar 20, with moving end 201, after embedding this spring 202, be to be arranged at the design in aforesaid perforation 2151 and sheathed groove 2152, but possess equally, aforesaid this dust cap 30 is arranged in the second draw-in groove that closely covers and buckle into aforementioned step-like ring limit and this groove, be positioned 2121, the ring limit of this groove 13 and this class's face 212, feature and dependency relation thereof on the formed opening of the second end face F2.

In sum, the dustproof construction of ratchet spanner of the present invention sees through the second draw-in groove of dust cap and groove and the design on ring limit, reach better dust-proof effect, the usability of dark tool industry, and the patent that nothing is approximate or identical or technology are openly formerly, real novelty and the progressive important document that has met standard on Patent Law now proposes application for a patent for invention in accordance with the law.

The foregoing is only the schematic specific embodiment of the present invention, not in order to limit scope of the present invention.Any those skilled in the art, the equivalent variations of having done under the prerequisite that does not break away from design of the present invention and principle and modification, all should belong to the scope of protection of the invention.

Claims

1. the dustproof construction of a ratchet spanner, this ratchet spanner has a head, one body of rod, one grip part and an actuator, wherein this head has the first end face and the second end face, on this head, offer at least the pore chamber of perforation second end face, and offer a groove on the second end face of this pore chamber one side, this pore chamber is for arranging for this actuator, on this pore chamber inner round wall, offer an annular groove, this actuator has a driving body at least, the ratchet piece of at least one and a toggle, on this driving body, has at least a tooth section, one fastening end and one first draw-in groove, and after in this actuator is installed in this pore chamber, this fastening end is to protrude in the second end face opening part from pore chamber, the part of this at least one ratchet piece is in meshing tooth in this driving body section, so as to this driving body of moving, carry out unidirectional torsion, this draw-in groove is opened on the ring footpath between fastening end and tooth section, and when driving body is inserted pore chamber with respect to the inboard of this annular groove position, and and this annular groove between be arranged with a C shape fastener, so as to the Locating driver body in this pore chamber, tail end tool one clamping part that this C shape fastener is relative is also inserted in this recess space, it is characterized in that: this driving body has class's face between fastening end and annular groove, the outer shroud of this class's face laterally protrudes and is formed with the ring limit of step-like and its diameter greater than the driving body maximum outside diameter, in this groove, be arranged with a dust cap, this dust cap between the ring limit that closely is covered in this groove and class's face on the formed opening of the second end face, and buckle in described step-like ring limit location, with the clamping part that coats this C shape fastener in recess space and prevent that the dirt bits from being entered in this pore chamber and actuator binding site by this groove.

2. the dustproof construction of ratchet spanner as claimed in claim 1, is characterized in that: in this groove, offer one second draw-in groove.

3. the dustproof construction of ratchet spanner as claimed in claim 2 is characterized in that: this dust cap is to buckle into location in the second draw-in groove of this groove.

4. the dustproof construction of ratchet spanner as claimed in claim 2, it is characterized in that: this dust cap has at least one slot to make way and is covered on the clamping part of this C shape fastener.

5. the dustproof construction of ratchet spanner as claimed in claim 4, it is characterized in that: the groove depth of the slot to make way of this dust cap is greater than the thickness of C shape fastener.

6. the dustproof construction of ratchet spanner as claimed in claim 4, it is characterized in that: this dust cap has one first round edge and the second round edge, and wherein the first round edge is the arc limit that fits in this groove one side, and the second round edge fits in the outer shroud ring limit of this driving body.

7. the dustproof construction of ratchet spanner as claimed in claim 6, is characterized in that: on the first round edge C1 of this dust cap, convex with a projection, when this projection is sheathed on this groove in this dust cap, embed in this second draw-in groove space spacing.

8. the dustproof construction of ratchet spanner as claimed in claim 6 is characterized in that: when this dust cap was sheathed on this groove, the second round edge of this dust cap embedded location in the ring limit that class's face outer shroud of this driving body is convexly equipped with.